Near infrared microcoupler with multilayer isotropic metamaterials

被引：2

作者：

Li, Kun ^{[1
]}

Tian, Chao ^{[2
]}

Liu, Shengchun ^{[1
,2
]}

Zhang, Jintao ^{[1
]}

Lv, Houjun ^{[1
]}

Zhu, Xuefeng ^{[3
,4
]}

机构：

[1] Heilongjiang Univ, Coll Phys Sci & Technol, Harbin 150080, Peoples R China

[2] Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA

[3] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China

[4] Huazhong Univ Sci & Technol, Innovat Inst, Wuhan 430074, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 118卷 / 14期

基金：

中国国家自然科学基金;

关键词：

NEGATIVE-INDEX; WAVE-GUIDE; OPTICAL SENSORS; NANO-SCALE; DESIGN;

D O I：

10.1063/1.4933068

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This paper reports the design of a microcoupler in the near-infrared region. The proposed structure consists of two alternately arranged complementary media. The complementary media, which consist of double-positive material and double-negative material, also can be made of a pair of single-negative materials. Simulation results show that the proposed structure has an excellent coupling efficiency compared to direct coupling. It has a maximum coupling efficiency closing to 1 at 1550 nm. As the total size of the coupling structure decreases, the passband exhibits a property of gradual blue shift. Therefore, we can design couplers operating in different frequency bands with high coupling efficiency. The influence of the permittivity and the thickness of each material layer on the coupling efficiency are also studied in detail. The proposed microcoupler has potential guidance in the design and development of high-performance coupling structures. (C) 2015 AIP Publishing LLC.

引用

页数：5